The USAAF wing is most likely from a B-25 with the somewhat non-traditional insignia on the upper right wing. (Typically US insignia was placed on the upper left wing and lower right wing.) The small "V" cutout at the far right lead edge is for the landing light.

Hello,
What I find a little odd is the US roundel, where is the "bar" each side of the star in circle ?
Perhaps the photo was taken near a scrap yard ? But the large building I think would not maybe overlook such a view ?
Review, looked at your photo link and would also go with a B25 wing section.
Other part does seem to be corrugated material photo perhaps in Italy ?
Alex